CN114016299A - Preparation method of VAE coating for artificial PU (polyurethane) imitation - Google Patents
Preparation method of VAE coating for artificial PU (polyurethane) imitation Download PDFInfo
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- CN114016299A CN114016299A CN202111342410.0A CN202111342410A CN114016299A CN 114016299 A CN114016299 A CN 114016299A CN 202111342410 A CN202111342410 A CN 202111342410A CN 114016299 A CN114016299 A CN 114016299A
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- coating
- vae
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- emulsion
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- 238000000576 coating method Methods 0.000 title claims abstract description 94
- 239000011248 coating agent Substances 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000004814 polyurethane Substances 0.000 title abstract description 27
- 229920002635 polyurethane Polymers 0.000 title abstract description 8
- 239000000839 emulsion Substances 0.000 claims abstract description 39
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000010453 quartz Substances 0.000 claims abstract description 28
- 239000000080 wetting agent Substances 0.000 claims abstract description 24
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 18
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 14
- 239000004014 plasticizer Substances 0.000 claims abstract description 14
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920001038 ethylene copolymer Polymers 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000008199 coating composition Substances 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 230000009965 odorless effect Effects 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 description 27
- 239000000463 material Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 8
- 239000005977 Ethylene Substances 0.000 description 8
- OMVSWZDEEGIJJI-UHFFFAOYSA-N 2,2,4-Trimethyl-1,3-pentadienol diisobutyrate Chemical compound CC(C)C(=O)OC(C(C)C)C(C)(C)COC(=O)C(C)C OMVSWZDEEGIJJI-UHFFFAOYSA-N 0.000 description 7
- 239000003973 paint Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010985 leather Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000013530 defoamer Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- -1 polyoxyethylene Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- UDSFAEKRVUSQDD-UHFFFAOYSA-N Dimethyl adipate Chemical compound COC(=O)CCCCC(=O)OC UDSFAEKRVUSQDD-UHFFFAOYSA-N 0.000 description 2
- MUXOBHXGJLMRAB-UHFFFAOYSA-N Dimethyl succinate Chemical compound COC(=O)CCC(=O)OC MUXOBHXGJLMRAB-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- XTDYIOOONNVFMA-UHFFFAOYSA-N dimethyl pentanedioate Chemical compound COC(=O)CCCC(=O)OC XTDYIOOONNVFMA-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 125000005375 organosiloxane group Chemical group 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KESQFSZFUCZCEI-UHFFFAOYSA-N 2-(5-nitropyridin-2-yl)oxyethanol Chemical compound OCCOC1=CC=C([N+]([O-])=O)C=N1 KESQFSZFUCZCEI-UHFFFAOYSA-N 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/045—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyolefin or polystyrene (co-)polymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/06—Properties of the materials having thermal properties
- D06N2209/067—Flame resistant, fire resistant
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/142—Hydrophobic
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/14—Properties of the materials having chemical properties
- D06N2209/143—Inert, i.e. inert to chemical degradation, corrosion resistant
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1635—Elasticity
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- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1664—Releasability
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- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1685—Wear resistance
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to the technical field of coating compositions, and discloses a VAE coating for artificial PU (polyurethane) and a preparation method thereof, wherein the coating comprises the following components in parts by weight: 30-60 parts of vinyl acetate-ethylene copolymer emulsion; 20-40 parts of titanium dioxide; 5-20 parts of quartz powder; 5-20 parts of a plasticizer; 3-5 parts of a wetting agent; 3-5 parts of a defoaming agent. The coating disclosed by the invention is strong in binding power, good in elasticity, good in flexibility, soft in hand feeling, low in cost, non-toxic, odorless, easy to degrade, pollution-free, safe, environment-friendly and harmless to a human body, and has the characteristics of anti-retrogradation.
Description
Technical Field
The present case is the divisional application, and the application number of mother's case is: 2021112174555, the invention name of the mother case is: a VAE coating for artificial PU and a preparation method thereof, the application of the parent case is as follows: china petrochemical industry, Chongqing ChuanWei chemical industry, Chongqing ChuanWei science and technology, the application date of the mother case is: the application types of the mother case are as follows, 10/19/2021: the invention is a patent.
The invention relates to the technical field of coating compositions, in particular to a VAE coating for artificial PU (polyurethane) and a preparation method thereof.
Background
PU is an abbreviation of Polyurethane, Chinese name is Polyurethane for short, and because physical properties such as different density, elasticity, rigidity and the like can be obtained only by simply modifying a formula, the Polyurethane is widely applied to the fields of interior and exterior wall heat insulation materials, refrigerator heat insulation materials, family decoration, high-grade sports goods, artificial synthetic PU leather and the like at present.
However, the cost of the artificial synthetic PU leather is high, so that the artificial synthetic PU leather is difficult to popularize on a large scale in some soft package fields. In the existing coating for imitating the artificial PU leather, in order to increase the flexibility and the hand feeling of a coating film, the content of emulsion used as a base material in the coating can be increased, and the coating has certain viscosity due to the addition of excessive emulsion. The tack-back is the phenomenon that after a paint film is dried, the paint film is adhered under the influence of certain temperature and humidity, and the appearance of the paint film has sticky feeling. Once the coating film is sticky back, dust is easily adhered to affect the decoration of the coating film, and the stickiness of the coating film is accompanied with softening of the coating film, which reduces the hardness, wear resistance and corrosion resistance of the coating film. The sticky coating film can only be scraped to remove the heavy coating, so the sticky coating is a defect of the coating film. In order to solve the problem of coating film re-adhesion, the method generally adopted is to reduce the content of emulsion serving as a base material in the coating, so as to improve the anti-re-adhesion of the coating film, but a new problem occurs at the moment, and the coating is easy to fall off after being sprayed due to the reduction of the content of the emulsion serving as the base material in the coating.
Therefore, how to prepare the coating which has the anti-tack property and is not easy to fall off is a technical problem to be solved urgently in the prior art.
Disclosure of Invention
The invention aims to provide a VAE coating for simulating artificial PU (polyurethane) and a preparation method thereof, so that the prepared coating has the advantages of anti-tack property and difficulty in powder falling.
In order to achieve the purpose, the invention adopts the following technical scheme:
a VAE coating for simulating artificial PU comprises the following components in parts by weight:
the principle and the advantages of the scheme are as follows: the nonionic wetting agent allows the filler to be uniformly dispersed in the emulsion, thereby providing excellent resistance to tack-back of the coating.
In practical application, the emulsion plays a decisive role in the mechanical and thermal properties of the coating. During the film forming process, the emulsion particles are close to each other and agglomerate, and bind the pigment and the filler together to form a continuous coating film. The addition of the emulsion can improve the mechanical properties of the coating, such as binding power, elongation at break, flexibility and the like; however, the anti-tack property of the coating film is reduced by increasing the content of the emulsion. Therefore, in order to avoid this problem, a method of appropriately reducing the content of the emulsion has been generally used in the prior art, but such a method has a disadvantage that the paint tends to fall off after forming a coating film. According to the application, on the premise of not reducing the content of the emulsion, a synergistic effect between the wetting agent and the quartz powder is discovered unexpectedly by screening various different pigments, fillers and related auxiliaries. Wetting agents have the effect of reducing the surface tension of the coating, enabling the coating to better wet the substrate, and are generally used to improve the adhesion of the coating to the substrate. The quartz powder is used as a filler, and the ingredient is silicon dioxide, so that the quartz powder is generally used for filling the paint, and the cost of the paint is reduced; and can improve the wear resistance, heat resistance and chemical resistance of the coating. In addition, the inventor also unexpectedly discovers that after the quartz powder and the wetting agent are added into the coating by compounding, the original action effect is maintained, the anti-retrogradation property of the coating can be effectively improved, and the powder falling problem of the coating is solved. The mechanism is as follows: the wetting agent is used for reducing the surface tension of the emulsion, so that the quartz powder is uniformly dispersed in the system, and after the film is dried, the adhesive force of the emulsion and the hardness of the quartz powder distributed on the surface of the emulsion are fully utilized.
Besides the performances, the coating disclosed by the invention also has the advantages of strong binding power, high strength, good flexibility, soft hand feeling, low cost, no toxicity, no odor, easiness in degradation, no pollution, safety, environmental friendliness and no harm to a human body.
Preferably, as an improvement, the ethylene content in the vinyl acetate-ethylene copolymer emulsion is more than or equal to 25 percent.
Has the advantages that: the ethylene content is in the range, and the coating has lower minimum film forming temperature and better elasticity and flexibility. If the ethylene content is less than this range, the glass transition temperature of the coating material will be increased, resulting in an increase in the minimum film-forming temperature. If the minimum film-forming temperature is higher than the normal temperature, the coating cannot form a film, in this case, the low-temperature moldability can be ensured only by additionally adding the film-forming assistant, while the water resistance and the alcohol resistance of the coating film are influenced by excessively high addition amount of the film-forming assistant, and the actual drying speed is also prolonged. Furthermore, an increase in the glass transition temperature of the coating also reduces the elasticity and flexibility of the coating.
Preferably, as an improvement, the particle size of the titanium dioxide is 600-1250 meshes.
Has the advantages that: the titanium dioxide has good dispersibility within the range, can be distributed in the emulsion more uniformly, has better compatibility with the emulsion, and can enhance the strength and the binding power of the coating. If the particle size of the titanium dioxide is too large, the titanium dioxide is not easy to be uniformly distributed in the emulsion; the titanium dioxide has too small particle size, so that the strength and the binding power of a coating film are reduced, and the service life of the coating film is shortened.
Preferably, as an improvement, the particle size of the quartz powder is 600-1250 mesh.
Has the advantages that: the particle size of the quartz powder is in the range, so that the quartz powder can be uniformly dispersed in the whole coating when the coating is formed into a film, and the strength of the coating can be obviously improved. If the particle size of the quartz powder is too large, the quartz powder is not easy to be uniformly distributed in the coating film; if the particle size of the quartz powder is too small, the strength of the coating film is lowered. The quartz powder and the wetting agent have synergistic effect, and the anti-tack performance of the coating film can be improved.
Preferably, as an improvement, the plasticizer is one of ormode and TXIB.
Has the advantages that: both the HMM MADE and the TXIB are nontoxic and environment-friendly plasticizers, so that the strength and the elasticity of the coating can be obviously improved, and the flexibility and the binding power are improved.
The Europad MADE (DBE is called by DuPont) is a dibasic acid ester mixture, also called as dibasic acid ester, and is an environment-friendly high-boiling-point solvent with low toxicity, low odor and biodegradability. The Europad MADE series products comprise dimethyl succinate, dimethyl glutarate, dimethyl adipate and mixtures thereof in different proportions, wherein the concentrations of the components in the mixtures are respectively as follows: 25-60% of dimethyl glutarate, 20-50% of dimethyl adipate and 10-30% of dimethyl succinate.
TXIB has a chemical name of 2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate, is a viscosity reducer with a plasticizing effect and low volatility, and can endow the coating with good cold resistance and water resistance.
Preferably, as a refinement, the wetting agent is a nonionic wetting agent.
Has the advantages that: the nonionic wetting agent can better reduce the surface tension of the coating, has better hydrophilicity, can quickly wet a substrate and improve the binding power of the coating. The nonionic wetting agent and the filler act synergistically to improve the anti-tack performance of the coating.
Non-ionic wetting agents as one class of wetting agents include polyoxyethylene alkylphenol ethers, polyoxyethylene fatty alcohol ethers, polyoxyethylene polyoxypropylene block copolymers, and the like, which are well known to those skilled in the art.
Preferably, as an improvement, the defoaming agent is one or two of a block polyether defoaming agent and an organosiloxane defoaming agent.
Has the advantages that: the block polyether defoamer and the organosiloxane defoamer have good defoaming and foam inhibiting effects, good stability, no toxicity and environmental protection.
In another aspect of the present invention, a preparation method of a VAE coating for artificial PU is also provided, which comprises the following steps: mixing the vinyl acetate-ethylene copolymer emulsion, titanium dioxide, quartz powder, a plasticizer, a wetting agent and a defoaming agent, uniformly stirring, and standing.
Has the advantages that: through mechanical stirring, the components in the coating can be uniformly mixed, so that the formed coating is more uniform, smoother and fuller in color and luster; and the preparation method is simple and is beneficial to realizing industrial production.
Preferably, as a modification, the stirring speed is 600-1800 rpm, and the standing time is 60-90 minutes.
Has the advantages that: the coating is dispersed more uniformly in the stirring speed range; the stirring speed is too low, so that the components in the emulsion are not uniformly dispersed; too high a stirring speed may cause the emulsion to break. Standing for a period of time can enable bubbles in the coating to fully escape, and enable components in the coating to be dissolved better and mixed more uniformly.
In another aspect, the invention provides an application of the VAE coating for the artificial PU in preparing the artificial PU, artificial fiber and a cotton cloth binder.
Has the advantages that: the coating can be used for manufacturing artificial PU, artificial fiber and for bonding cotton cloth.
Detailed Description
The following is further detailed by way of specific embodiments:
VAE emulsion CW40-602 is purchased from Chongqing Chuan vitamin chemical Co., Ltd, China petrochemical group; ST-83 was purchased from Solvay; MP200 was purchased from Mylar and Euromad MADE from Jiangsu Euromad Lacquer, Inc.
EXAMPLE 1 preparation of Artificial VAE coating
The artificial VAE coating comprises the following components:
VAE emulsion: 300g of VAE emulsion CW40-602 (ethylene content 25%);
titanium dioxide: 400g, particle size 800 mesh;
quartz powder: 200g, the grain diameter is 800 meshes;
plasticizer: 100g, the plasticizer in this example is HMODE MADE;
wetting agent: 50g, the wetting agent in this example is ST-83;
defoaming agent: 50g, the defoamer in this example was MP 200.
The preparation method of the artificial VAE coating comprises the following steps:
uniformly mixing the vinyl acetate-ethylene copolymer emulsion, titanium dioxide, quartz powder, HMD MADE, ST-83 and MP 200; then stirring and dispersing evenly at the rotating speed of 900 revolutions per minute, and standing for 90 minutes.
EXAMPLE 2 preparation of Artificial VAE coating
The artificial VAE coating comprises the following components:
VAE emulsion: 300g of VAE emulsion CW40-602 (ethylene content 25%);
titanium dioxide: 300g, particle size 800 mesh;
quartz powder: 200g, the grain diameter is 800 meshes;
plasticizer: 150g TXIB;
wetting agent: 30g of ST-83;
defoaming agent: 30g of MP 200.
The preparation method of the coating comprises the following steps:
uniformly mixing the vinyl acetate-ethylene copolymer emulsion, titanium dioxide, quartz powder, TXIB, ST-83 and MP 200; then stirring and dispersing evenly at the rotating speed of 600 revolutions per minute, and standing for 60 minutes.
EXAMPLE 3 preparation of Artificial VAE coating
The artificial VAE coating comprises the following components:
VAE emulsion: 400g of VAE emulsion CW40-602 (ethylene content 30%);
titanium dioxide: 400g of the powder with the grain diameter of 800 meshes;
quartz powder: 100g of the powder has the particle size of 800 meshes;
plasticizer: 200g of HMD MADE;
wetting agent: 30g of ST-83;
defoaming agent: 20g of MP 200.
The preparation method of the coating comprises the following steps:
uniformly mixing the vinyl acetate-ethylene copolymer emulsion, titanium dioxide, quartz powder, a high-boiling point plasticizer, a wetting agent and a defoaming agent; then stirring and dispersing evenly at the rotating speed of 1800 rpm, and standing for 90 minutes.
EXAMPLE 4 preparation of Artificial VAE coating
The artificial VAE coating comprises the following components:
VAE emulsion: 500g of VAE emulsion CW40-602 (ethylene content 25%);
titanium dioxide: 200g, the grain diameter is 800 meshes;
quartz powder: 50g, the grain diameter is 800 meshes;
high-boiling plasticizer: 150g TXIB;
wetting agent: 30g of ST-83;
defoaming agent: 20g of MP 200.
The preparation method of the coating comprises the following steps:
uniformly mixing the vinyl acetate-ethylene copolymer emulsion, titanium dioxide, quartz powder, a high-boiling point plasticizer, a wetting agent and a defoaming agent; then stirring and dispersing evenly at the rotating speed of 1200 r/min, and standing for 80 min.
EXAMPLE 5 preparation of Artificial VAE coating
The artificial VAE coating comprises the following components:
VAE emulsion: 600g of VAE emulsion CW40-602 (ethylene content 25%);
titanium dioxide: 200g, the grain diameter is 800 meshes;
quartz powder: 100g, particle size 800 mesh;
high-boiling plasticizer: 50g TXIB;
wetting agent: 30g of ST-83;
defoaming agent: 20g of MP 200.
The preparation method of the coating comprises the following steps:
uniformly mixing the vinyl acetate-ethylene copolymer emulsion, titanium dioxide, quartz powder, a high-boiling point plasticizer, a wetting agent and a defoaming agent; then stirring and dispersing evenly at the rotating speed of 1000 revolutions per minute, and standing for 75 minutes.
Comparative example 1
This comparative example differs from example 1 in that: no quartz powder was added.
Comparative example 2
This comparative example differs from example 1 in that: ST-83 was not added.
Comparative example 3
This comparative example differs from example 1 in that: no quartz powder and ST-83 were added.
Application performance detection
The coatings obtained in examples 1 to 5 and comparative examples 1 to 12 were used for producing a pseudo-PU, and then dried at 110 ℃ for 5 minutes, followed by maintenance at normal temperature for 24 hours, and a part of the material was taken out to produce a 2 cm wide by 10 cm long strip-shaped adhesive material, 10 replicates were set for each example, and the peel tensile strength of the pseudo-PU material was measured by a microcomputer controlled testing machine, C43, manufactured by MTS, USA, and the results were the same except that the coatings were different, and the results were shown in Table 1.
Table 1 results of performance testing
| Group of | Tensile Strength in Peel/MPa |
| Example 1 | Broken material |
| Example 2 | Broken material |
| Example 3 | Broken material |
| Example 4 | Broken material |
| Example 5 | Broken material |
| Comparative example 1 | Is easier to strip |
| Comparative example 2 | Is easier to strip |
| Comparative example 3 | Easy to peel off |
The results show that: as can be seen from Table 1, the coatings of examples 1-5 used to make a simulated PU damaged the substrate. It is thus demonstrated that the adhesive of the invention has a strong adhesive force. In addition, the coatings of examples 1-5 were not irritating. Therefore, the coating disclosed by the invention is safe and environment-friendly. Moreover, the coatings prepared in examples 1-5 have substantially no problem of tack-back, and comparative examples 1-3 have tack-back of varying degrees.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (2)
1. A preparation method of a VAE coating for simulating artificial PU is characterized by comprising the following steps: the method comprises the following steps: mixing the vinyl acetate-ethylene copolymer emulsion, titanium dioxide, quartz powder, a plasticizer, a wetting agent and a defoaming agent, uniformly stirring, and standing.
2. The method for preparing the VAE coating for the artificial PU according to claim 1, wherein the method comprises the following steps: the stirring speed is 600-1800 rpm, and the standing time is 60-90 minutes.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725122A (en) * | 2013-12-30 | 2014-04-16 | 河北晨阳工贸集团有限公司 | Home decoration coating and preparation method thereof |
| CN107337967A (en) * | 2017-07-12 | 2017-11-10 | 合肥梵腾环保科技有限公司 | A kind of environment-friendlyweather-proof weather-proof water-repellent paint and preparation method thereof |
| CN108659686A (en) * | 2018-05-25 | 2018-10-16 | 北京路桥方舟交通科技发展有限公司 | Heat reflective type road mark paint |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103725122A (en) * | 2013-12-30 | 2014-04-16 | 河北晨阳工贸集团有限公司 | Home decoration coating and preparation method thereof |
| CN107337967A (en) * | 2017-07-12 | 2017-11-10 | 合肥梵腾环保科技有限公司 | A kind of environment-friendlyweather-proof weather-proof water-repellent paint and preparation method thereof |
| CN108659686A (en) * | 2018-05-25 | 2018-10-16 | 北京路桥方舟交通科技发展有限公司 | Heat reflective type road mark paint |
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